Layover disruption for each and also extra landings. If you don't care what you fly(kinda like me as a commuter), the stuff adds up pretty quickly, but if you live in Memphis, and are looking forward to going home to your own bed, I believe you can drop it, and that would be your only course of action. The contract compensates, that is about it...
I may be off base, but that is how I read it.
HJ